This graphic shows the ratcheting up of the ongoing missile war in Yemen

WASHINGTON, D.C. — On the heels of this week’s failed missile attacks on a US Navy vessel, the Missile Defence Project at the Center for Strategic and International Studies published the following timeline illustrating the interceptions of ballistic missiles in Yemen.

Since the March 2015 launch of the Saudi-led Gulf Cooperation Council’s military Operation Decisive Storm, which was developed to bolster the Yemeni government under President Abd Rabbuh Mansur Hadi, missile attacks launched from Houthi-held territory have accelerated.

Although the majority of the missile launches were intercepted, the graphics showcases how the war in Yemen has the chance to spill over beyond its borders. This fact was particularly driven home when a Houthi missile attack caused extensive damage to a former US Navy ship that was being operated by the United Arab Emirates at the start of the month off the coast of Yemen in the Red Sea.

The Houthis were also believed to be responsible for two attacks over the course of four days against the US-operated USS Mason, which was patrolling in the Bab al-Mandab Strait between Yemen and Eritrea. These attacks led to a US counter strike against Houthi radar platforms.

The Houthis are an Iranian-backed militant group that rose up against the internationally recognised Yemeni government in 2014, ultimately driving the president into exile in Saudi Arabia in March 2015. This precipitated a bloody and ongoing free-for-all in Yemen that pits the Houthis and their supporters against Gulf-supported forces loyal to the Yemeni government in exile, ISIS, and al Qaeda.

According to the BBC, more than 6,800 people have been killed in the conflict since 2015, and 80% of the population is in need of humanitarian assistance.